Circulatory System

Question 1

Blood composed of?

Answer 1

A connective tissue composed of plasma, liquid, water, salts, nutrients, toxins, gases

Question 2

Red blood cell

Answer 2

Erythrocytes. Produced in the bone marrow. Lacks a nucleus. Contains a protein called hemoglobin.

Short life span

Question 3

Hemoglobin

Answer 3

Binds and carries up to 4 molecules of oxygen. Gives the color of red. Contains iron

Question 4

Oxygenated blood

Answer 4

Bright red color

Question 5

Deoxygenated blood

Answer 5

Dark red color

Question 6

Who collects old and damaged red blood cells?

Answer 6

Liver and spleen. Breaks down rbc to release iron. Blood carries iron back to the bone marrow where it is used to make more hemoglobin and packaged into a new rbc.

Question 7

Blood vessels

Answer 7

Blood is delivered to all the tissues in the body by the blood vessels

Question 8

Artery

Answer 8

Carries blood away from the heart. Thicker wall

Question 9

Arteriole

Answer 9

Smaller artery

Question 10

Circulatory system

Answer 10

Transports blood throughout the body and exchange of gases between the blood and tissues.

Question 11

Vein

Answer 11

Carries blood to the heart. Thinner wall

Question 12

Venule

Answer 12

Smaller vein

Question 13

Capillary

Answer 13

Smallest blood vessel

Question 14

Percentage of where blood is in the body

Answer 14

30% in arteries, 5% in capillaries and 65% in the veins

Question 15

Aorta

Answer 15

Largest artery

Question 16

Largest vein

Answer 16

Superior vena cava

Question 17

Heart

Answer 17

Muscular pump that forces blood through branching series of vessels to the lungs and rest of body.

Question 18

Pulmonary circulation

Answer 18

Blood flows from the right side to the heart to the lungs then back to the heart

Question 19

Systematic circulation

Answer 19

Blood flows from the left side of the heart to the rest of the body then back to the heart

Question 20

Atria chamber

Answer 20

Upper chamber. Thin walled. Receive blood from the veins

Question 21

Ventricle chamber

Answer 21

Lower chamber. Thick walled. Pump blood out of the heart

Question 22

Valves

Answer 22

Controls blood flow through the heart

Question 23

Atrioventricular valves

Answer 23

Allows blood to flow from the atria Into the ventricles

2 types-

Tricuspid valve - right
Bicuspid valve- left

Question 24

Semilunar valves

Answer 24

Ensures blood to travel from the ventricles to the arteries

2 types -

Pulmonary semilunar - right

Aortic semilunar - left

Question 25

Blood flow chart from systemic circuit

Answer 25

``` Superior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary semilunar valve Pulmonary artery Lungs (gas exchange) ```

Question 26

Blood flow chart from pulmonary circuit

Answer 26

``` Pulmonary vein Left atrium Bicuspid valve Left ventricle Aortic semilunar valve Aorta Tissue in the body ```

Question 27

Left ventricle

Answer 27

Pumps blood out of the heart to all the organs in the body. Has a thicker wall

Question 28

Right ventricle

Answer 28

Pumps blood out of the heart only to the lungs

Question 29

Papillary muscles

Answer 29

Muscles at the bottom surface of the ventricles

Question 30

Chordate tendineae

Answer 30

White fibers that are attached to the atrioventricular valves and papillary muscles

Question 31

Relaxation of ventricles

Answer 31

When relaxed, the atrioventricular valves open. Blood moves freely from the atria to the ventricles

Question 32

Contraction of ventricles

Answer 32

When the papillary muscle contract, it pulls down the chordae tendineae and closes the atrioventricular valves. The semilunar valves open and allow blood to pump out of the heart

Question 33

Diastole

Answer 33

Relaxation of ventricles. Atria contract and pump blood to the ventricles Atrioventricular valves open and semilunar valves close

Question 34

Systole

Answer 34

Contraction of ventricles Semilunar valves open and blood pumps out of the ventricles .